I have been going to the same independent optician for a while, but was never completely happy with the prescription. I recently went elsewhere for a second opinion and think the new prism part of my ...

For a science project, I am trying to create a solution that is similar to the solution in the eyes that creates protein build up on contact lenses. I would like to know the contents of the aqueous ...

I am having a lot of trouble putting in/taking out contacts. For my right eye I try pulling back my upper eyelid with my left hand and using the middle finger of my right hand to pull down the lower ...

I presume you mean store barcode scanners....
No, that isn't right. There is no danger at all.
The laser is so weak in those, it barely makes it through the glass, that's why the article has to be so close to it to be read. the beam is very very short. All you are seeing is a light, which poses no danger. It isn't shooting any rays out at anyone.
If scanners were dangerous, I'm sure the manufacturers and scientists and electrical engineers would know about it and employees would all be wearing protective goggles while working at the cash.
That is just another silly story that someone started and will probably be around for years.